package com.atguigu.spring5.dao;

/**
 * @author dengzhao
 * @create 2021-12-08 21:47
 */
public class UserDaoImpl implements UserDao{

    @Override
    public int add(int a, int b) {
        return a+b;
    }

    @Override
    public String update(String id) {
        return null;
    }
}
